Gray iron foundry cupola



June 6, 1950 w. GILBERT GRAY IRON FOUNDRY CUPOLA Filed Nov. 5, 1947 I N VEN TOR.

W/Zz/AM 6/4 55m N wyraw ATTD RN EYS Patented June 6, 1950 UNITED STATES iltAY IRON FOUNRRZYl-QUBQLk William Gilbert, Florenge golp. Application November 5, 194%,.Serial1N3oJl84dl95i I (01. aec zal.

3 maime- 1 This invention relates to a gray iron foundry cupola. It is an object of the present invention to provide a gray iron cupola with a bottom section which is adjustable to permit access to the interior of the cupola at times when repair is necessary.

Other objects of the present invention are to provide a sectionalized cupola having an adjustable bottom portion which is of simple construction, inexpensive to manufacture and efficient in operation.

For a better understanding of the invention, reference may be had to the following detailed description taken in connection with the accompanying drawing, in which:

Fig. 1 is a fragmentary and side elevational view of a cupola having the adjustable lower section embodying the features of the present invention,

Fig. 2 is a front elevational view of the cupola with the bottom plate of the section dropped down,

Figs. 3 and 4 are respectively fragmentary and transverse sectional views taken on lines 3--3 and 4-4 of Fig. 2.

Referring now to the figures, l represents an upper section of the cupola which is supported on a front or horizontally disposed frame H and depends through an opening therein. Below the upper section is a lower section in which the hot iron and slag is contained. This section has trunnions l2 and I3 on which the section may be turned and these trunnions are mounted in bearing brackets M which are connected to vertical supports or braces for vertical adjustment relative thereto. The vertical supports have screws 16 threaded on the supports with supporting springs I! thereon. The supports have guide members I8 for guiding and retaining the trunnion brackets 14. Extending across one face of the lower section is a shaft 2| adapted to be rotated by a crank 22. The shaft is journalled on bracket extensions 23. The shaft has sprockets 24 over which are extended chains 25 passing over large sprockets 26 mounted respectively on the trunnions l2 and I3 for rotational movement. Associated with each of the trunnion sprockets is a large bevel gear 21 meshing with a small horizontally disposed bevel gear 28 fixed to the upper end of the screw I6.

As the crank is turned, the lower section of the cupola will be raised or lowered. If it is lowered it can be readily and easily tilted for the purpose of being cleaned or repaired. In the bottom of the section there is a drop cover plate 3| which will permit when dropped, access to the 2 ame end. of therse i ea 1 c U PQ FQBQ ih. I. cesium J 1 ccesscan ie-ma ma had to the upper end of the section.

To retain the lower section in either the tilted position or raised position latches 32 are provided. These latches will enter either notch 33 or 34 to retain the section. These notches are provided in the guide bracket l8.

In order that the iron can be inspected while hot there is provided a peep hole structure 35 with cover plates 36 thereon.

The slag can be removed from the top of the iron through a raised opening in the lower section and over spout 31. The iron will be taken from the cupola over lower spout 38. The bottom cover 3| has a retaining latch 39.

While various changes may be made in the detail construction, it shall be understood that such changes shall be within the spirit and scope of the present invention as defined by the "appended claims.

I claim:

1. In an iron foundry cupol'a, a horizontally disposed frame, an upper section supported by said frame and secured thereto, a pair Of vertically disposed braces arranged in spaced parallel relation with respect to each other, a lower section supported by said braces and mounted for swinging movement about a horizontal axis, and a manually operable means for vertically adjusting said lower section with respect to said upper section, said means comprising a screw rotatably supported by each of said braces, a horizontally disposed bevel gear secured to the upper end of each of said screws, a pair of trunnions projecting from said lower section, a sprocket wheel mounted for rotation about each trunnion, a bevel gear mounted on each of said sprocket Wheels and arranged in meshing engagement with said horizontally disposed bevel gear, a crank operatively connected to said lower section, and a chain and sprocket means for connecting said crank to each of said sprocket wheels.

2. In an iron foundry cupola, a horizontally disposed frame, an upper section supported by said frame and secured thereto, a pair of vertically disposed braces arranged in spaced parallel relation with respect to each other, a lower section supported by said braces and mounted for swinging movement about a horizontal axis, and manually operable means for vertically adjusting said lower section with respect to said upper section, said means comprising a screw rotatab-ly supported by each of said braces, a horizontally disposed bevel gear secured to the upper end of each of said screws, a pair of trunnions projecting from said lower section, a sprocket wheel mounted for rotation about each trunnion, a bevel gear mounted on each of said sprocket wheels and arranged in meshing engagement with said horizontally disposed bevel gear, a crank operatively connected to said lower section, a chain and sprocket means for connecting said crank to each of said sprocket wheels, and means for releasably maintaining the lower section immobile in its ad- .justed position.

3. In an iron foundry cupola, a frame, an upper section supported by said frame and secured thereto, a pair of vertically disposed braces, a lower section supported by said braces and mounted for swinging movement about a horizontal axis, and a manually operable means for vertically adjusting said lower section with respect to said upper section, said means comprising a screw rotatably supported by each of said braces, a horizontally disposed bevel gear secured to the upper end of each of said screws, a pair of trunnions projecting from said lower section, a sprocket wheel mounted for rotation about each trunnion, a bevel gear mounted on each of said sprocket wheels and arranged in meshing engagement with said horizontall disposed bevel gear, a crank operatively connected to said lower section, and a chain and sprocket means for connecting said crank to each of said sprocket wheels.

WILLIAM GILBERT.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 698,787 Behrend Apr. 29, 1902 855,603 Adams June 4, 1907 1,033,062 Collin July 16, 1912 FOREIGN PATENTS Number Country Date 595 Sweden May 3, 1886 

